Table of Contents
Advances in Power Electronics
Volume 2018, Article ID 2719380, 12 pages
https://doi.org/10.1155/2018/2719380
Review Article

Fault Handling Methods and Comparison for Different DC Breaker Topologies and MMC Topologies of the HVDC System

Department of Mechatronics, University of Bayreuth, Universitätsstr. 30, 95447 Bayreuth, Germany

Correspondence should be addressed to Xu Jiang; ed.htueryab-inu@gnaij.ux

Received 12 October 2017; Revised 25 December 2017; Accepted 10 January 2018; Published 7 February 2018

Academic Editor: Changming Liaw

Copyright © 2018 Xu Jiang and Mark-M. Bakran. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The HVDC system has many significant benefits and is widely used around the world. The protection of HVDC system is always an issue, which should be solved. This paper presents the working principle of different protection schemes. The advantages and disadvantages of these protection schemes are also introduced. In order to solve the HVDC fault, two protection strategies are proposed. One design focusses on the topologies of the HVDC breaker in the HVDC line, such as all-solid HVDC breaker, resonant HVDC breaker, and hybrid HVDC breaker. The other design is from the viewpoint of converter topology, which has two types. One type generates the counter-emf in arms, such as full bridge MMC, hybrid MMC, and clamp-double MMC. The other type cuts off the current path from the AC side to the DC side, which is also introduced in this paper. Some performances of these topologies are compared, such as switching time and efficiency.